Milling machine



FIG. 1 is a perspective view of the milling machine,

FIG. 2 is a front elevation of the machine,

FIG. 3 is a side elevation as seen from the left of the milling machine of FIGS. 1 and 2,

FIG. 4 is an elevation of the right side of the milling machine of FIGS. 1 and 2,

FIG. 5 is a top plan view of the milling machine, and

FIG. 6 is a rear elevation of the machine. 

The ornamental design for a milling machine, as shown and described. 